is-is的区域迁移.docx

实验 27 is-is的区域迁移实验目的： 1、理解IS-IS 区域迁移的原理。 2、掌握IS-IS 的区域迁移配置。 实验步骤： 1.配置各台路由器的ip地址，并且使用 Ping命令确认各路由器的直连口的互通性。 2、配置各台路由器的 IS-IS 协议。 3、查看 R1的路由表： R1#show ip route Gateway of last resort is 172.16.255.2 to network 0.0.0.0 172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks C 172.16.255.0/30 is directly connected, Serial1/1 i L1 172.16.255.4/30 115/20 via 172.16.255.2, Serial1/1 115/20 via 172.16.255.9, FastEthernet0/0 C 172.16.255.8/30 is directly connected, FastEthernet0/0 i L1 172.16.1.0/24 115/20 via 172.16.255.2, Serial1/1 i L1 172.16.2.0/24 115/20 via 172.16.255.2, Serial1/1 4、查看任一路由器的链路状态数据库： R1#show isis database detail IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OLR1.00-00 * 0x00000008 0x8D3B 1116 0/0/0 Area Address: 49.0001 /当前的区域ID为:49.0001 NLPID: 0xCC Hostname: R1 IP Address: 172.16.255.1 Metric: 10 IP 172.16.255.8 255.255.255.252 Metric: 10 IP 172.16.255.0 255.255.255.252 Metric: 10 IS R3.01 Metric: 10 IS R2.00 5、配置区域向 10.abc7迁移。在三台路由器原有的配置基础上作如下配置： R1(config)#router isis cisco R1(config-router)#net 10.abc7.ca00.0bbc.0000.00 /配置第二个NET地址 R2(config)#router isis cisco R2(config-router)#net 10.abc7.ca01.0bbc.0000.00 R3(config)#router isis cisco R3(config-router)#net 10.abc7.ca02.0bbc.0000.00 6、再次查看任意一台路由器的链路状态数据库： R1#show isis database detail IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R1.00-00 * 0x00000009 0xAF8D 991 0/0/0 此时会发现在链路状态数据库中出现两个区域地址。可以看出网络内的每一台路由器都是和多区域相连的。 Area Address: 49.0001 Area Address: 10.abc7 NLPID: 0xCC Hostname: R1 IP Address: 172.16.255.1 Metric: 10 IP 172.16.255.8 255.255.255.252 Metric: 10 IP 172.16.255.0 255.255.255.252 Metric: 10 IS R3.01 Metric: 10 IS R2.00 7、查看任意一台路由器的clns的邻居表： R1#show clns is-neighbors detail System Id Interface State Type Priority Circuit Id Format R3 Fa0/0 Up L1 64 R3.01 Phase V Area Address(es): 49.0001 10.abc7 /显示相同的两个区域号 IP Address(es): 172.16.255.9* Uptime: 00:08:06 NSF capable R2 Se1/1 Up L1 0 01 Phase V Area Address(es): 49.0001 10.abc7 IP Address(es): 172.16.255.2* Uptime: 00:08:18 NSF capable 8、当确认每一台路由器都同时处于需要迁移的区域的区域号时，则可以删除原来的NET地址语句，配置如下： R1(config)#router isis cisco R1(config-router)#no net 49.0001.ca00.0bbc.0000.00 R2(config)#router isis cisco R2(config-router)#no net 49.0001.ca01.0bbc.0000.00 R3(config)#router isis cisco R3(config-router)#no net 49.0001.ca02.0bbc.0000.00 9、查看 R1路由表： R1#show ip route 172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks C 172.16.255.0/30 is directly connected, Serial1/1 i L1 172.16.255.4/30 115/20 via 172.16.255.2, Serial1/1 115/20 via 172.16.255.9, FastEthernet0/0 C 172.16.255.8/30 is directly connected, FastEthernet0/0 i L1 172.16.1.0/24 115/20 via 172.16.255.2, Serial1/1 i L1 172.16.2.0/24 115/20 via 172.16.255.2, Serial1/1 10、查看 R1的链路状态数据库： R1#show isis database detail IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R1.00-00 * 0x0000000F 0xEC9B 1065 0/0/0 Area Address: 10.abc7 /显示为迁移后的区域 NLPID: 0xCC Hostnam